6700776689 has 2 divisors, whose sum is σ = 6700776690. Its totient is φ = 6700776688.

The previous prime is 6700776679. The next prime is 6700776713. The reversal of 6700776689 is 9866770076.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5180400625 + 1520376064 = 71975^2 + 38992^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6700776689 is a prime.

It is not a weakly prime, because it can be changed into another prime (6700776619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3350388344 + 3350388345.

It is an arithmetic number, because the mean of its divisors is an integer number (3350388345).

Almost surely, 2^6700776689 is an apocalyptic number.

It is an amenable number.

6700776689 is a deficient number, since it is larger than the sum of its proper divisors (1).

6700776689 is an equidigital number, since it uses as much as digits as its factorization.

6700776689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5334336, while the sum is 56.

The square root of 6700776689 is about 81858.2719644142. The cubic root of 6700776689 is about 1885.2764748194.

The spelling of 6700776689 in words is "six billion, seven hundred million, seven hundred seventy-six thousand, six hundred eighty-nine".